Nut-lock.



"A. L. BRAND.

NUT LOCK. MJPLICATION FlLED .IUNEQL 1916.

1,210,758. Patnted Jan. 2,1917.

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E ,2.9 i /zz 33 WITNESS INI/Enron a "il )falo/)D L Brand v er l A TTOR/'IE Y a nut '101 To all whom it mag/ .cocem: 1 l1 Be it known that-I, ADOLPH L; BRAND;

citizen` of tlieUnit'ed States, residing -at Seattle, in the county of King' and State of,

5 1 Vashington, have-invented a certain new.

`and use-ful Iniprcvement in .fut-Locks,;of rich thefollowing is'a specification.

My invention relates to improvements in bolt" and nut locks, and theobject of niy in" ntion is to provide a bolt; a nut `and we rs which shall be of such forms ofv -iconstiuctionfas will adapt them to be so disposedffsecurely' to bolt objects together that said{ olt cannot rotativelymove. with respect'tosaid object .and said nut andwashers cannot move with respect to said bolt Vin .response to shocks and vibrations due to normal conditions .of use of said objects; but;k atftiines .,req'uired; extraordinary force may applieduto rotate-said nut in the operationofremoving said bolt from said ob- ]'ectsj `without injuring or destroying said bolt; said. nut jorsaid fwashers. I accomplish this object by devices illustrated in the accompanying drawings wherein- .Figqire 1 j is; a viewfin side elevationof objects ,which are bolted together by a bolt andas's'ociated parts embodying my invention;- Fig. vQuise. VView of the saine inY "erti- 30 ca l-section. ongbroken line of Fig. 1;

`F1g. 3 isgajperspective viewot a nut com-Ly is f of"k wpodjnor lother .yieldingmaterial; and .4.5 Fie-j Tfs PIeHLYiGW 0f 011e" 0f. .the Washts b ndi n. my invention. f rring to the drawings; thronghoiit whichflike reference nunerals indicate like parts, 1 8' designates the screw-threaded shankL provde`d`l w1t radial notches 11"exten.ding"l frni-ftlie dge of .y its j screw-threaded hole I I "of'it's'outer side surfaces, all of-each'fof said notches Y a-nlgleawith -re'spe offa bolt providedxvth a bolt-head Q-and -toinatically in` response v"to rotatingthe nut ,OFFICE t-'fthe' plane of .the inner side surface lr` of' said -nutv 10;..as shown*more/clearly inl'Fig. 3; `vThe inner side surface ofthe holt-head 9 is 'also 60 providedavith like radial recesses '21 which extend from the-periphery of thev shank of :the bolt nearly to the edges of Vthe outer side surfaces of said .bolt-head 9.l -The shank 8 of the bolt is disposed to extend through 65 .objects 12, 13'and 1st with its screw-threaded end portion projected outwardly from the side suri'ace of the object 12 and^upon said outwardly projected end port-ion is screwed the nut- 10. The outer side surface of the 70 object 1-2 and the outer side surfafpe of the object 14 are each provided with "a notch, as notches 15 and 16 respectively; of a forni similar-Ato theforin of the notches 11 of the nutv 10 and ofthe innersu'rt'ace of the bolt- 75 head 9whiclrnotches 15 and 16 extend radially from the circula-r edges of thehole i through `the vobjects 1:2, 13 and 14C within which is ldisposed the screw-threaded shaft 8 of the bolt. `Disposed to surround the 80 'screw-tht eaded shank 8 of the'bolt are washn ersl'i" and 18, the lwasher 17 being disposed between the nut 10 and the object 12, while the wasaer 18 is disposed between the bolthead 9 and the object 1-1. The'waslie'rs 1T .85 and 1 8 are bo'th of the same vforni of conj struction; which form of constructionA is` y shown by a perspective view 'ofthe washer 17 in Fig. 4; the washer 18, asshown in Figs. 1 and 2 being in an inverted position 90 with respect to the position of the -washer 17 and eaclrof the washers` 17 andv 18 being', splitradially; the portion adjacent to-one*"; side of the* split being bent abruptlyisidewise to forni a sharp catching edge 19 whilefs the portion on the other side'of said split is i bent sidewise in an opposite direction, butv is made thinner and provided with'fa` side'- wise projecting ycatch 20: of av formthan adapts it t act like a pa'wjl 'their the washer is operatively. disposedffto-f nrouI-idvtv the screw-threaded shaik'f'in the inanner shown-N in Figs. l and 2;jwho`se sa'idcatches-QO of the Washers 1f? 181 respectively engage@lyk with the vertical side'sfof the notches 15 and 105 -16 inthcobjects 12"'an`dlitrespectivei and y j l y wherein the catchingfedges--119ofjsaid .wash- .onfits inner 'sid surface, is,`

ersland 18 yengage respectively 'with the "I verticakside walls of the radial notches. 11. f and 21;".fll of which engagements result au'- 110 1o. with required force :rigidly to' boit` to:

gether the objects 12, 13 and 14, and when the objects 12, 13 and 14 are thus rigidly united thc nut 10 cannot be rotated to unscrew it in response to shocks and constantvibrations of the objects 12, 13 anti 1l, nor carb-the bolt itself be rotated response to such shocks and constantv vi-, brations; but, if it be desired to reniove the bolt from the objects 12, 13 and 1l it is only necessary to apply extraordinary force, by means of a wrench, either to 'the nut 10 or to the bolt-head 9 to unscrew the nut 10 from the bolt or to unscrcw the bolt from the nut 10, in which operation the catches 2U in :l cam-like manner will ride up the' sloping v. all of the respective one of the radial notches'l and 1G, springing the adj a- .cent thinner portion of the washer away ing edge 19 being engaged with the vertical side wall ot the respect-ive one of the notches 11 and 21 in an obvious manner.

In Fig. 5 I have shown objects 22, 23 and 24 rigidly united by a bolt 25, that provided with a bolt-head 2G, a screw-threaded end portion 2T, while a portion 28 of its shank that is adjacent to its bolt-head 2G is .of square cross-section; the hole within which said bolt is disposed to extend through the three objects 22, 23 and 24 heilig of square cross-section only within that part ol" it which extends through the object 2l whereby said bolt cannot be rotatiaely moved with respect to the objects 22. 23 andy 24. The screw-threaded end vportion 2T that projects outwardly of the side surface of the object 22 is provided with a washer 29. that is like the washer 1T. and with a nut 30 that is in all respect like the nut 10 of Figs. l, 2 and 3. which washer 29 and nut 30 operate in all particulars like the washer 1T and nut 10. of Figs. 1 and L., so that when the nut Il() has been forcibly rotated to bind the objects 22. 23 and-2l rigidly together no vibration or shock to which objects 22. 23 and 2l can be subjected will loosen or unscrew the nut 30. butif a wrench is applied with extraordinary force to unscrew thenut 3U the washer '29 will operate like the washer 1T to permit the nut 30 to rotate and carry with it said washer 29.

In Fig. G. I have shown by fragmentary view. two objects 31 and 32 united'by a bolt il-l extending therethrough, the object 32 being of wood or other yielding material. The screw-threaded portion of the bolt 33. for convenience of drawing is not shown. but may be assumed to be provided with a nut. like nut 10. and with a washer like the washer 1T.

The bolt 33 is provided with a bolt-head ill which is in all respects similar in construction to the bolt-head 9 of Figs. 1 'and 2 and surroundin the shank ot' said bolt Srl adjacent to the 1nner surface ot' the boltllead 3l is a washer 35 which is exactly like the washers 17 and 1S in forni of construction, and like the washer 18 with respect to 70 its position with. relation/to its adjacent bolt-head. Also surrountjlng the shank of the bolt 33. in a position between the washer and the wooden object 32. is an auxiliary washer- 36 ofV larger diameter than the 75 washer 35. which auxiliary washer 36 is ot' the form shown by a plan view in Fig.T. said washer 36 beingr provided with a plurality of cuts (formed b v a die) each of which extends radially from its inner circular edge through about hall of the distance;`- to its .outer circular edge. thence in a con-"- centric circle for a short distance, as cuts 3T in Fig. T, and a portion adjacent to the innerl side of each of said cuts is bent sidewise from the plane of one side surface ol' said washer 3b to form radial slots 3S and radial projectingr catchesl Bil which catches 39 are forcibly pressed into the surface of the wooden object 32 while any one of the 90 slots 3S serve to receive the projecting catchl 40 of the washer 35, as shown in said Fig. Il'. when the nut of the bolt 33 is screwed rigidly to clamp together the objects 3l and 32.

Manifestly changes may be made in the forms, dimensions and arrangement of parts of my invention without departing from the spirit thereof.

llihat I claim is:

1. A bolt and nut lock of the class described. which embodies a bolt having a bolthead whose inner side surface is provided with a plurality of radial notches extending from its shank to a point near the edges ot' its outerside surfaces; a nut whose inner 10i. surface is provided with a plurality of radial notches extending from the edge of its screw-threaded hole to a point near the edges of its outer side surfaces; two washers adapted to surround and freely fit the shank of said bolt'- both of said washers being split radially and each having that portion of it adjacent to one side of said split bent abruptly sidewise to fo'rm a sharp catching edge, while its portion adjacent to the other side of said split is bent sidewise in an opposite direction. said latter portion being thinner and provided with an outwardly projecting catch of a form that adapts it to serve as a pawl when disposed 120 within one of said radial notches of said bolthead and said nut; and an auxiliary washer adapted to surround and freely fit the shank of said bolt. said auxiliary washer heilig provided with radial slots and sidewise projecting catches which extend fromA its inner circular edge toward its outer circular edge.

2. A bolt and nut lock of the class described, which embodies a bolt having a bolthead whose innerside surface is provided 1l0l l abruptly sidewise to form a sharp catching- 'edge, while its portion adjacent to the other with a plurality vof radial notches extending from its shank to a pointnear the edges of its outer side surface; a nut whose inner surface is provided With a plurality of radial notches extending from the edge of its screw-threaded hole to a point near the edges of its. outer side surfaces; and two Washers adapted to surround and freely fit the shank of said bolt, both of said Washers being split radially and each having that portion of it adjacent to one side of said split bent side of said split is bent sidewise in an op` posite direction, said latter portion being thinner ,and provided with an outwardly projecting catch of a form that adapts it to serve as a pawl when disposed Within one of said radial notches of'said bolt-head and said' nut.

In Witness whereof, I hereunto subscribe my name this 29th day of May, A. D. 1916.

ADOLPH L. BRAND. Witnesses:

FRANK VAR'REN, O. JoHsoN. 

